Fabrication and performance optimization of the magneto-optical (Tb1−xRx)3Al5O12 (R = Y, Ce) transparent ceramics

Chen, Chong; Zhou, Shengming; Lin, Hui; Yi, Qing

doi:10.1063/1.4756789

Cited by 56 publications

(23 citation statements)

References 19 publications

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“…The newly developed FR based on TGG ceramics should accelerate the development of high-pulse-energy lasers, high-power lasers, and their applications. Our findings, which underline the advantages of magneto-optical transparent ceramics, should also promote the study of other types of magneto-optical transparent ceramics, such as terbium aluminum garnet ceramics [24,25].…”

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confidence: 71%

Terbium gallium garnet ceramic Faraday rotator for high-power laser application

et al. 2014

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A terbium gallium garnet (TGG) ceramic Faraday rotator (FR) with an isolation ratio of 33 dB was demonstrated at a laser radiation power of 257 W. This FR can be equipped with a large optical aperture by using ceramics technology to prevent laser damage at high-energy pulse operation. The thermal lens of a 257 W laser with a beam diameter of 2.6 mm had a focal length of 9.5 m, which is easily corrected using a spherical lens to suppress the undesirable effects of thermal lensing. The rotation angle of the FR was stabilized by water cooling. The results indicate that the TGG-ceramic-based FR is suitable for high-energy laser systems with high repetition rates.

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confidence: 71%

Terbium gallium garnet ceramic Faraday rotator for high-power laser application

et al. 2014

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“…Here, due to the electronic transition of 4f 8 → 4f 7 5d89, the Tb 3+ ion offers one of the highest paramagnetic susceptibilities ( J = 6, g = 1.46) and magnetic moments (9.5–9.72 μ eff ) of all rare earth ions. Consequently, the most promising bulk MO material is terbium aluminum garnet (Tb 3 Al 5 O 13 , TAG, V B ~ 180 rad/T/m)1011, which is not yet available commercially, though. Instead, terbium gallium garnet single crystals (Tb 3 Ga 5 O 13 , TGG, V B ~ 134 rad/T/m)12 are presently the most widely used commercial MO materials.…”

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confidence: 99%

Faraday rotation and photoluminescence in heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses for fiber-integrated magneto-optics

Gao

Winterstein-Beckmann

Surzhenko

et al. 2015

Sci Rep

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We report on the magneto-optical (MO) properties of heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses towards fiber-integrated paramagnetic MO devices. For a Tb3+ ion concentration of up to 9.7 × 1021 cm−3, the reported glass exhibits an absolute negative Faraday rotation of ~120 rad/T/m at 632.8 nm. The optimum spectral ratio between Verdet constant and light transmittance over the spectral window of 400–1500 nm is found for a Tb3+ concentration of ~6.5 × 1021 cm−3. For this glass, the crystallization stability, expressed as the difference between glass transition temperature and onset temperature of melt crystallization exceeds 100 K, which is a prerequisite for fiber drawing. In addition, a high activation energy of crystallization is achieved at this composition. Optical absorption occurs in the NUV and blue spectral region, accompanied by Tb3+ photoluminescence. In the heavily doped materials, a UV/blue-to-green photo-conversion gain of ~43% is achieved. The lifetime of photoluminescence is ~2.2 ms at a stimulated emission cross-section σem of ~1.1 × 10−21 cm2 for ~ 5.0 × 1021 cm−3 Tb3+. This results in an optical gain parameter σem*τ of ~2.5 × 10−24 cm2s, what could be of interest for implementation of a Tb3+ fiber laser.

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“…Some researchers have found that the quantum based super-exchange interaction between Tb 3 þ and other paramagnetic Re 3 þ ions can occur, greatly enhancing the Faraday effect. Ce 3 þ doped TAG ceramic has a V of 199.55 rad T À 1 m À 1 at 632.8 nm, 16% larger than that of TAG [14]. {Tb 3 }[Sc 1.95 Lu 0.05 ](Al 3 ) O 12 (TSLAG) single crystal having an increment of 20% of V compared to TGG dues to the doping of Sc 3 þ , Lu 3 þ , Al 3 þ ions [15,16].…”

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confidence: 97%